fart box design

[thormxkid 10+ year member]

hey im looking into build a budget fart box...

i'll be running a 12 type r and a 500/1 for power.

im just looking to spl the box not listen to it on music.

it'll be goin in a 2003 grand am. thinking of doing a external port.

what would be my best options to get this thing box wise?

size and tuning

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[Louisiana_CRX 5,000+ posts]

1.25 cu ft box external 6" aeroport 15" long

 

[Bumpin' Goalie 10+ year member]

1.25 cu ft box external 6" aeroport 15" long

Word. Except I'd go bigger on the box. More efficient. He doesn't have a lot of power to throw at it. 6" aero port @ 50ish hz in that car.

 

[Louisiana_CRX 5,000+ posts]

Word. Except I'd go bigger on the box. More efficient. He doesn't have a lot of power to throw at it. 6" aero port @ 50ish hz in that car.

your right I'm use to more power...maybe 1.75 same port demensions

 

[Bumpin' Goalie 10+ year member]

I vote 2 cubes after displacements with 6" or maybe try even an 8" aero. CRX style //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

in 2 cubes a full length 8" aero (18") would be right around 53hz. Would be obnoxious (loud)

 

[thormxkid 10+ year member]

so i ended up makin a box little smaller then planned it 15x15x18.5...it was all i could make with the wood i had...so 1.75 should be the total size if i figured it out right...i'll me mounting the sub inverted for more space in the box....now i all i have is 3 inch pvc for ports how could i use this instead of one 8inch peice...i can't seem to find a calutor to figure it out? any ideas on lenght and how many pieces?

 

[basscort2009 5,000+ posts]

idea of a burp box is to reach the max limits and output of the sub so i would have gone 2.5 cubes tuned to 50 with that power. less power equals bigger box. 2.5 cubes will give u alot of output and for daily would not be that great but for spl it would have alot of output and put up decent 40s for numbers

 

[thormxkid 10+ year member]

k but my box is 1.75 now i might build a new one in the future but...if i wanted to tune it 50-56 hz range how long would the 3 inch pvc need to be and how many should i run?

 

[hispls 5,000+ posts]

Four 3" ports cut to 15" long tunes to 50hz (or a bit under) Start there and you can cut down an inch at a time if you need to tune higher. I'm assuming you want max port area. You could do more if you don't mind longer ports.

Download winisd (it's free) it'll allow you to calculate volume/port/tuning etc.

 

[basscort2009 5,000+ posts]

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your welcome

 

[CRXBMPN 5,000+ posts]

3" pvc is bad

 

[basscort2009 5,000+ posts]

i agree. do either 1 6 or one 8. i say one 8 in 2 cubes. would be 25 inches of port per cube //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif awesome!

 

[thormxkid 10+ year member]

thanks guys

 

[thormxkid 10+ year member]

just finished a new box when with 2.5 cubes after displacement and 8 port tuned to 55 hz

 

[basscort2009 5,000+ posts]

sweet! any numbers?